1625401632 has 48 divisors (see below), whose sum is σ = 4282492032. Its totient is φ = 539792640.

The previous prime is 1625401627. The next prime is 1625401633. The reversal of 1625401632 is 2361045261.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1625401632.

It is not an unprimeable number, because it can be changed into a prime (1625401633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5223 + ... + 57254.

It is an arithmetic number, because the mean of its divisors is an integer number (89218584).

Almost surely, 2^1625401632 is an apocalyptic number.

1625401632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1625401632 is an abundant number, since it is smaller than the sum of its proper divisors (2657090400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625401632 is a wasteful number, since it uses less digits than its factorization.

1625401632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62761 (or 62753 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1625401632 is about 40316.2700655703. The cubic root of 1625401632 is about 1175.7641944718.

Adding to 1625401632 its reverse (2361045261), we get a palindrome (3986446893).

The spelling of 1625401632 in words is "one billion, six hundred twenty-five million, four hundred one thousand, six hundred thirty-two".